What is the primary purpose of a DEXA scan?

A DEXA scan, or Dual-Energy X-ray Absorptiometry scan, is primarily designed to measure bone density. This imaging technique utilizes two low-energy X-ray beams to differentiate between bone and soft tissue, allowing for a precise calculation of bone mineral density (BMD). The primary purpose of assessing bone density is to evaluate the risk of osteoporosis and fractures, particularly in individuals who may have a higher likelihood of low bone mass.

While other options touch on relevant health aspects such as heart health or muscle mass evaluation, they do not pertain to the primary function of the DEXA scan. It is specifically focused on bones, making bone density measurement its central purpose.